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IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences 2008 E91-A(5):1296-1298; doi:10.1093/ietfec/e91-a.5.1296
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Copyright © 2008 The Institute of Electronics, Information and Communication Engineers

Regular Section -- Letters -- Mobile Information Network and Personal Communications

Improved Fine Frequency Synchronization Method for OFDM-Based DRM

Young-Hwan YOU1, Sang-Tae KIM2, Kyung-Taek LEE3 and Hyoung-Kyu SONG1

1 The authors are with the uT Communication Research Center, Sejong University, Korea. E-mail: yhyou{at}sejong.ac.kr, 2 The author is with the Korea Institute of Industrial Technology Evaluation and Planning, Seoul, Korea., 3 The author is with the DxB & Communication Convergence Research Center, Korea Electronic Technology Institute, Korea.


  Abstract

In this letter, a robust pilot-assisted synchronization scheme is proposed for estimation of residual frequency offset (RFO) in OFDM-based digital radio mondiale (DRM) system. The RFO estimator uses the gain reference pilots mainly reserved for the channel tracking in the DRM standard. To demonstrate the efficiency of the proposed RFO estimator, comparisons are made with the conventional RFO estimator using the frequency reference pilots in terms of mean square error (MSE) performance.

Key Words: digital radio mondiale, OFDM, synchronization

Manuscript received August 29, 2007. Manuscript revised December 17, 2007.


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